Unit 5 - TH4 and BH5, Punta S'Argiola (Ordovician of Italy)

Also known as Dom 2b, `Punta S'Argiola'. Cyclopygid Bed

Where: Sardinia, Italy (30.3° N, 8.7° E: paleocoordinates 74.0° S, 114.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Amorphognathus ordovicicus conodont zone, Punta S'Argiola Member (Domusnovas Formation), Kralodvorian (449.8 - 445.2 Ma)

• BA 5/6 Foliomena community. Listed as upper Kralodvorian; Domusnovas overlies Portixeddu Formation.

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, shelly/skeletal, calcareous mudstone

• Fossiliferous, dark, reddish-gray, slightly calcareous mudstone

Size classes: macrofossils, mesofossils

Collection methods: BA 5/6 Foliomena community; Member occurs in five outcrops, but is only .89 to 1.5 meters thick, (on average 1.1 m). All the photographed specimens come from these two locations (only approx. 15 km apart) and so I will consider this a pooled sample, despite more than one location.

Primary reference: E. Villas, W. Hammann, and D. A. T. Harper. 2002. Foliomena fauna (Brachiopoda) from the Upper Ordovician of Sardinia. Palaeontology 45(2):267-295 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 75890: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 05.11.2007, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Christianiidae
Christiania nilssoni Sheehan 1973
 Strophomenida - Leptestiidae
Leangella (Leangella) fecunda Villas et al. 2002
 Strophomenida - Aegiromenidae
"Aegironetes cf. tristis" = Aegiria
"Aegironetes cf. tristis" = Aegiria
 Strophomenida - Foliomenidae
Foliomenidae indet. Williams 1965
Rhynchonellata
 Atrypida - Cyclospiridae
 Orthida - Chrustenoporidae
Jezercia cf. ostiaria Havlicek and Mergl 1982
 Orthida - Dicoelosiidae
Epitomyonia sp. Wright 1968
 Orthida - Dalmanellidae
Dedzetina serpaglii Villas et al. 2002
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis tarda Barrande 1846
Trilobita
 Corynexochida - Styginidae
Paraphillipsinella sp. Lu and Zhang 1974 trilobite
 Corynexochida - Illaenidae
Ulugtella sp. Petrunina 1975 trilobite
 Proetida - Rorringtoniidae
"Madygenia sp." = Pseudobirmanites
"Madygenia sp." = Pseudobirmanites Li 1978 trilobite
 Proetida - Telephinidae
Telephina (Telephina) cf. fracta Barrande 1852 trilobite
 Phacopida - Phacopidae
Phacopidae indet. Hawle and Corda 1847 trilobite
 Phacopida - Pliomeridae
Ovalocephalus tetrasulcatus Kielan 1960 trilobite
 Harpetida - Harpetidae
Hibbertia sp. Jones and Woodward 1899 trilobite
 Trinucleida - Trinucleidae
Nankinolithus sp. Lu 1957 trilobite
 Asaphida - Cyclopygidae
Symphysops aff. armatus Barrande 1872 trilobite
 Asaphida - Asaphidae
Birmanites cf. latus Angelin 1851 trilobite
 Ptychopariida - Shumardiidae
Shumardia (Shumardella) sp. Billings 1862 trilobite